risolto qtaminima "|" era sbagliato, corretto: product.minBuyQty || 1

src/store/Products.ts

@@ -660,11 +660,11 @@ export const useProducts = defineStore('Products', {
         }
       } else {
         if (this.isQtyAvailableByProduct(product)) {
-          order.quantity = product.minBuyQty | 1
+          order.quantity = product.minBuyQty || 1
           order.quantitypreordered = 0
         } else {
           if (this.isInPreorderByProduct(product)) {
-            order.quantitypreordered = product.minBuyQty | 1
+            order.quantitypreordered = product.minBuyQty || 1
             order.quantity = 0
           }
         }